The Compostable & Biodegradable Bio360 Mulch Film, made of Mater-Bi, a corn starch based raw material, is compostable and biodegradable. The master batch pigment mixture used for coloring is also made of Mater-Bi. It leaves no toxic residues in the ground and you save on removal, recycling and land fill costs. ECOCERT CANADA approved Bio360 to be used in the organic farm.